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青海盐湖富含大量的锂资源,但是对于青海湖的盐湖卤水提锂起步相对较晚,目前还属于实验、示范性的研究阶段,相关的研究人员通过科学论证,针对不同盐湖卤水矿藏的特点进行研究,开发出了多种卤水提取锂矿技术和工艺,经过近年来的不断深入研究和开发,目前在卤水提取锂的技术方面,取得了很大进展。但是当前青海盐湖的锂资源综合开发利用率还是偏低,导致没有充分发挥资源优势带来的经济优势局面,盐湖锂资源的潜在经济价值远没有体现出来。为此,在青海盐湖锂资源还未遭到大规模破坏之前,还需要不断改进技术手段,总结以往经验,最大限度地使有限的资源服务于社会。主要对青海盐湖锂资源的开发现状进行分析,并针对存在的问题分析可行性对策。 相似文献
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锂资源是国家重要战略资源,其广泛应用于新能源汽车、电子产品、储能等诸多领域。中国锂资源储量丰富,其中盐湖卤水锂资源主要分布在青海与西藏地区,但受制于盐湖卤水自身品位较低、锂盐提取效率低下以及生产能力有限等因素,未能得到有效开发,使得对国外锂产品产生了严重的依赖。因此,为保障中国锂资源持续安全供应,着力突破盐湖提锂技术,探索出更为绿色、高效且低成本的提取技术对盐湖卤水锂资源的利用具有重要意义。系统地介绍了盐湖锂资源概况、盐湖卤水特点以及锂资源高效分离提取的最新研究进展,最后对锂资源分离提取技术的研究重点做出了展望。 相似文献
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近年来,在新能源产业的推动下,新能源汽车和储能技术快速发展,带动锂盐消费飞速增长。目前,全球锂盐产业一片火热,正在跑马圈地和快速扩产中。中国拥有丰富的锂资源,尤其是盐湖卤水锂资源,而且通过多年技术攻关和产业化实践,中国盐湖卤水提锂技术逐渐成熟,新技术不断涌现,在全球锂盐行情火热的背景下,中国锂盐湖具备快速扩产的潜力。介绍了中国目前已经成功产业化的盐湖卤水提锂技术,分析各技术的优缺点,探讨正在研究中的有望实现产业化应用的提锂新技术,并研判了盐湖卤水提锂技术的发展方向,从绿色高效提锂工艺的角度出发,对于盐湖锂资源供应未来的发展趋势进行了分析和展望。通过研究,有望对中国盐湖提锂行业技术现状和技术发展方向有较清晰的认识,并对今后国内外锂盐湖的开发提供技术参考。 相似文献
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中科院青海盐湖研究所与新西兰ILION公司最近在西宁签订了“青海锂业二期建设投资协议” 拟在青海建成中国最大的锂产业基地青海盐湖所拥有世界上最先进的卤水提锂技术 新西兰ILION公司是著名的国际锂业巨头。去年 这两家科研厂商走到了一起 联手开发青海东台吉乃尔盐湖锂资源 并合资组建了青海锂业有限公司。 位于青海格尔木的东台吉乃尔盐湖有丰富的锂资源 过去一直因卤水提锂技术难以突破而将锂的开发利用搁置。去年以来 青海省提出加大盐湖资源综合开发利用程度 在已经形成的钾产业和中国最大钾肥工业基地的基础上 《化工矿物与加工》2001,30(4):30-31
中科院青海盐湖研究所与新西兰ILION公司最近在西宁签订了“青海锂业二期建设投资协议” ,拟在青海建成中国最大的锂产业基地青海盐湖所拥有世界上最先进的卤水提锂技术 ,新西兰ILION公司是著名的国际锂业巨头。去年 ,这两家科研厂商走到了一起 ,联手开发青海东台吉乃尔盐湖锂资源 ,并合资组建了青海锂业有限公司。位于青海格尔木的东台吉乃尔盐湖有丰富的锂资源 ,过去一直因卤水提锂技术难以突破而将锂的开发利用搁置。去年以来 ,青海省提出加大盐湖资源综合开发利用程度 ,在已经形成的钾产业和中国最大钾肥工业基地的基础上 ,形… 相似文献
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苯乙烯是重要的石油化工原料。本文介绍了国内外苯乙烯生产的发展概况,合成乙苯,苯乙烯所用的催化剂种类,并就苯乙烯生产及催化剂的发展趋势提出了自己的观点。 相似文献
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Synthesis and characterization of homopolymers and copolymers of various acrylates and acrylonitrile
Various homopolymers and copolymers of methyl acrylate, ethyl acrylate, butyl acrylate, and acrylonitrile in different feed ratios were synthesized. These were characterized by IR, 13C-NMR, DSC, DTA, and TGA. Spectroscopic characterization helped in differentiating copolymers of different mol ratios. Thermal analysis revealed different degradation patterns for homopolymers and copolymers. The temperature and energy changes associated with various phase transitions were dependent on the chemical composition of homo- and copolymers, as expected. © 1993 John Wiley & Sons, Inc. 相似文献
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The variation of the Au 4f binding energy of Au clusters with the cluster size has been established by measuring the binding energies of clusters whose size distributions were independently determined by HREM and STM. The binding energy increases significantly when the cluster size is less than 2 nm. Au-Cu bimetallic clusters of the composition Cu3Au have been deposited for the first time on carbon substrates. The shifts in the core level binding energies of the bimetallic clusters show the effect of alloying in the case of large clusters, but show effects of both alloying and cluster size in the case of the small clusters. The interaction of CO with Cu3Au clusters is stronger than with a bulk Cu metal. The interaction of CO with small Cu clusters also seems to be stronger than with bulk Cu or with large Cu clusters. 相似文献
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《国际聚合物材料杂志》2012,61(1-4):113-122
Abstract Kinetics and mechanisms of oxidation of 6 acetals by molecular oxygen and ozone in liquid phase have been studied. Reaction with molecular oxygen (70°C, 15–16 hr) leads to the formation monoethers of the corresponding glycols with 68–90% selectivity. Salts of metals and complexes with crown-ethers have increased the reaction rate significally. Ozone have reacted with acetals with formation similar products. The mechanisms of intermediate stages have been proposed. 相似文献
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G. R. Hamed 《The Journal of Adhesion》1983,16(1):31-39
A substantially greater detachment energy is required to strip a polyethylene tereph-thalate (Mylar) film from a styrene-butadiene-styrene (SBS) triblock copolymer compared to that for peeling from a random styrene-butadiene (SBR) copolymer. This is true even though the intrinsic interaction between the Mylar and each elastomer is expected to be similar because of their virtually identical chemical composition. It is proposed that this difference in peel strength (between the SBS and SBR) is a consequence of the much higher dissipative capacity of the former elastomer. Another manifestation of this is the higher cohesive tear strength of the SBS compared to the SBR. Extents of energy dissipation within each elastomer during detachment of the Mylar adherend are consistent with the hypothesis that the average maximum stress experience before detachment is some similar fraction of each elastomer's tensile strength. 相似文献
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责任是人应主动承担的角色义务和对其因过失所造成后果应承担的责罚.有两层涵义:一是义务;二是后果.责任心是个体自觉做好分内事务和履行道德义务的心理倾向,是个性心理品质成分中自我特征维度上的重要内容.责任心具有两个方面的涵义:一是角色分内职责;二是角色道德义务.责任心是一种通过责任认知、责任个性和责任适应的动态形式表现出来的静态品质,责任心是责任心过程结构与责任心关系结构相互制约、相互影响的统一体. 相似文献
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Polypentafluorostyrene (PPFS), polymethylacrylate (PMA), and poly(pentafluorostyrene-co-methylacrylate), poly(PFS-co-MA) were prepared and the wetting characteristics of polymer blends of PPFS and PMA were compared with that of poly(PFS-co-MA) via contact angle measurements. The critical surface tension of polypentafluorostyrene was found to be 22.6 dyne/cm, which is comparable to the value reported for polytrifluoroethylene (22 dyne/cm). The critical surface tension of poly(PFS-co-MA) is not linearly related to its composition. The polymer blends of PPFS and PMA exhibit significant surface enrichment of the fluoropolymer. The harmonic-mean method1 was employed to determine surface tensions of these polymers and many known polymers. It is found that the method produces useful surface tension data provided the contact angle values are derived from testing liquids of dissimilar polarity. 相似文献